Jeep jl second battery location

Easily mount your radio in a Jeep JL or JT Gladiator without drilling or cutting! Watch this video for an install on a Jeep JL using the Rugged Radios Jeep J...

The 3.6L V6 Jeep JL Wrangler features a dual battery system where a main traditional battery is paired with an auxiliary battery for ESS (electronic start stop system). How the dual battery system is wired and operates can be confusing for owners used to a traditional single battery setup. ... compiled by JLWF member Jebiruph (Jerry). Inside ...Nov 19, 2016 ... Detailed installation instructions for the Genesis Offroad dual battery kit for Jeep Wrangler JKs. Did we miss anything?About. 2021 Jeep Wrangler Car Battery. Under the hood, your 2021 Jeep Wrangler battery holds a charge that supplies your electrical accessories when the engine is off and delivers the current necessary for the starter to crank the engine over. The battery works for thousands of start cycles but will eventually degrade and need to be replaced.'18 JL Rubi, '22 Prevost M H3-45,'01 Harley FatBoy ... Location SW Florida Vehicle(s) 2023 Jeep Beach High Tide, 2021 2 dr. Willys stick Occupation Professional Nobody ... As for the 48v etorque battery under the Jeep it will be under warranty for longer than you’ll likely own the Jeep and even after that you would probably take it ...A DC to DC inverter seems ok for charging a battery at the rear of the truck since that battery will never charge the same as up front using an isolator due to the long cable lengths and loss to the rear. Slight problem is the DC converter is not 100% efficient and will take more power to charge the battery than the battery gets during charging.

Jeep Wranglers are equipped with two batteries for several reasons. The primary battery is responsible for starting the engine and providing power for movement, while the secondary battery, also known as the auxiliary battery, powers add-ons and accessories. The load is evenly distributed by having two batteries, and the electrical components ...FCA's original ESS in the Cherokee runs off of one battery and I suspect problems with that system lead to implementing the supplemental (meaning small additional) Aux battery. I believe the full size and mini battery were always intended to behave like a single battery system, not a dual battery system (except when auto stopped).Where is the 2nd battery? | Jeep Wrangler Forums (JL / JLU) -- Rubicon. Jeep wrangler 4xe 2021 electric system hybrid battery rubicon plug serves charging monolith utah station talks ac shows adds mile Battery overlanding wrangler jeep jlwranglerforums sahara reactions Battery gladiator jeep auxilary jeepgladiatorforum forum stop start2019 Jeep Wrangler Unlimited Rubicon Occupation Mechanical Engineer Feb 15, 2020. Thread starter #1 I am installing the S&B air intake CEL fix & was instructed to disconnect the 12V battery & eTorque battery. Where is the eTorque battery located & how do I disconnect it? I saw on the 3.6L they have the ESS battery underneath the Auxillary ...Went to replace the batteries in 2018 Jeep Wrangler Rubicon JL with the 2.0 liter engine and auto trans. and found out mine didn't have the second battery in it. It has the box it sets in but no battery or leads. Replaced the main battery and now my power steps won't retract. They start to then...Mar 28, 2023 · Well, apparently all JL's have battery issues, thank you Jeep. We had problems with our JLU, replaced it with a JLURD. (Right now the JLU is having other JL issues - oil cooler, cam shaft, valves - about 1/2 of an engine swap). Since we got the JLURD, we then have virtually never used ESS - but still that little battery has caused headaches.

Your dealer is an asshat. first, raise holy hell with the service manager and then the GM and then find the ownership group and raise holy hell with them second, get with JeepCares third, call FCA and tell them what your dealer has done. fourth, never, ever, ever, go back to that dealer and, assuming that your story Is 100% true — no embellishment, no fibs, no shades of grey, , post the ...Nov 9, 2022 ... Comments507 · HOW TO Replace the Main and Auxiliary Battery on a Jeep JL Wrangler and JT Gladiator Truck · Why Don't I Have a Dual Battery System&...First Name AC Abegian Joined Jan 9, 2022 Threads 67 Messages 897 Reaction score 472 Location Los Angeles Vehicle(s) 22 Jeep Wrangler diesel Sahara Altitude , 94 MKIVAug 31, 2018 · Here's my attempt at a diagram that illustrates the battery connections for the 3.6L ESS dual batteries. Hopefully this will help make sense of why things work the way they do. I tried to show that when you pull the battery terminals off of the battery, there is still an electrical connection between the cables attached to the battery terminal. If your 2023 Jeep Wrangler's key fob stops working, it may need a new battery. Learn how to replace it here.Transcript [music playing][voice over] No batter...Its time! A new battery is needed for the JL (3.6l engine). What is everyone's votes on the best battery to upgrade to for a Jeep that if used offroad often, has some aux lighting, and runs a winch when needed. Sub question: has anyone just removed the smaller aux battery under the fuse box. I have the ESS disabled via a …

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Location Bellingham, WA Vehicle(s) 2023 Jeep Gladiator, 2018 Fiat 124 Spider ... Jeep Wrangler Sport S JL 2-D Build Thread Link Occupation Professional dancer/male stripper Dec 22, 2022 ... The second battery reliably reads 12.9/13.0 volts at shut down and the main battery at shutdown reads 12.7/12.8. I'm using the Jeep's EVIC …The Jeep is still under warranty, and a DIY replacement would cost $300+, so I'd like a quick assessment before I take it into the dealer for warranty replacement. A DIY replacement would only take 15 minutes (thanks Jeep for making it easy on an Ecodiesel), but why spend $300 unnecessarily? The Jeep has less than 8,000 miles.In addition to housing the compressor switch, breathers, and air chuck out of the way, the AAL remote kit adds a 12V plug for your fridge and a six-way ATC fuse block with a negative bus. This ...What are the components i need to check on the 48v battery system to see if there can be an issue or it lost its full charge. ... Location chisholm mn 55719 Vehicle(s) 18 ram bighorn 4x4 18 jeep rangle rubicon May 15, 2020 #11 I park my 2018 jl rubicon 2.0 for winter in Minnesota. I disconnect the positive cable for the 12 volt and then I ...

Jun 22, 2023 · my jl which is a unlimited sport had no second battery its a 2021 i installed a gennis 3 dual battery system . i was unaware it had only the one battery. quite easy to do cost about $1100 i believe with two new battlers and the kit.did it for peace of mind .hearing all those horror stories of that small hidden battery giving up the ghost at any ... About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...'18 JL Rubi, '22 Prevost M H3-45,'01 Harley FatBoy Jul 28, 2022 #23 Djoseph1174 said: ... I dont see a reason for the 2nd battery, my wife's Honda Passport has the same identical battery as my main battery in the Jeep. ... But not sure it needs to be there for when the Jeep does a battery voltage check at start up on the aux battery. Won't ...There are a few methods to delete the aux battery. My plan is to remove the aux battery the connect it's pos terminal to the main and just tape up the aux's negative terminal. From what I've read that's the best way for my 2018 JL. 2018 JLUR, Firecracker Red.Do know: The JL/JT factory fabric battery cover that insulate's the Main battery will not fit over some aftermarket H7 batteries. Depends on the physical dimensions of the aftermarket H7.-If you want to use Wing Nuts on the Main battery connectors, here are 2 sizes you will need..Hint: If when turning a wingnut it hits the wing of the wingnut in close proximity to it, file down the wings on ...jawest12. 752 posts · Joined 2014. #2 · Nov 15, 2020. No. You have a large 48 volt battery under the jeep on the driver's side. Opposite the gas tank. Sent from my SM-G975U using Tapatalk. My '18 JL Turbo Build. My '17 Big Bear Build - Sold.It was my understanding that the second battery was mainly for ESS operations and ran your radio, fan, etc. I didn't know it ran the switches. Its odd that the AUX switches aren't available when the jeeps running though. ... Location S/w Florida Vehicle(s) 2018 Jeep Jl Rubicon May 9, 2019 #9 I just can't take a chance with the toy battery and ...I will run a positive wire from the primary battery to 80ah continious solenoid about 8mm ID. Then from the solenoid straight to the batt. (2 inline fuses) Earth i will take from as close as possible to the Batt. The solenoid acts as a relay wich gets ignition power trough a timer relay which allows the primary batt to charge the cranking amps it used to start the jeep and then after 4min or ...Aug 10, 2023 · To charge the jeep jl auxiliary battery, it is important to prepare the vehicle by ensuring it is parked in a safe location. Following specific steps will help prevent any electrical mishaps. The next step involves connecting the charger to the auxiliary battery, so it is crucial to identify the correct terminals for a safe connection.

Oct 14, 2023 ... HOW TO Replace the Main and Auxiliary Battery on a Jeep JL Wrangler and JT Gladiator Truck. Wayalife•367K views · 6:15. Go to channel ...

First Name Ken Joined Mar 30, 2018 Threads 47 Messages 586 Reaction score 863 Location NW Montana and Yuma Az Vehicle(s) 2018 jlUR White Rubi, 2018 GMC 3500 Duramax,Having your Jeep battery die really isn’t that big of a deal, especially if you have a set of jumper cables handy and another vehicle near by that's willing ...Disconnect/tape/tuck away aux battery negative second Thoughts from forum? Thanks! Sponsored . jludave Well-Known Member. First Name Dave Joined Feb 13, 2020 Threads 13 Messages 3,456 Reaction score 3,454 Location The Isle of Long ... Essentially you'll be running ESS like every other vehicle out that there has it: with one battery. But your JL ...#1 · Mar 16, 2022. Must be my turn to have the battery issues. 2021 JLUR and it has been flawless (so far) with only 3900 miles. My stop-start has worked as it should until now. …I saw a video that showed the 2nd battery being replaced. They were also changing the main battery so they pulled it. But if you are just replacing the 2nd battery, does the main battery need to be pulled? Also, nearly always when starting the Wrangler, a message pops up on the dash after a few moments saying something like "Aux switches ...Location Canada Website litwphoto.com Vehicle(s) 2019 Wrangler Unlimited Sahara Build Thread ... I'm assuming that you are talking about the 3.6L JL. For reference ESS battery=aux battery=supplemental battery; they're all one and the same. ... The second question: I think Jeep Cares is very good at facilitating the resolution of rig problems by ...Just curious if anyone knew if they kept the aux battery under the fuse box, or if they moved it under the main battery to make it easier to get to. ... Aldo Joined Nov 16, 2019 Threads 86 Messages 11,020 Reaction score 27,689 Location Bellingham, WA Vehicle(s) 2023 Jeep Gladiator, 2018 Fiat 124 Spider Occupation Market Research ...Here's my attempt at a diagram that illustrates the battery connections for the 3.6L ESS dual batteries. Hopefully this will help make sense of why things work the way they do. I tried to show that when you pull the battery terminals off of the battery, there is still an electrical connection between the cables attached to the battery terminal.1235 posts · Joined 2013. #7 · Sep 26, 2022. American Adventure Lab makes a bracket that goes in the cubby below the cargo area that holds a second battery, dc to dc charger and an ARB duel compressor. I have it and holds the items out of sight and securely. I run my domestic fridge off of it.There are two batteries in the well. Elie the front passenger seat. O e is larger and for normal operation. The 2nd and smaller, about 1/4 the size of the first, is right next to it.

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Dec 13, 2023 · Aux battery issue, need second opinion. ... Location Salt Lake City Vehicle(s) 2018 JL Rubicon, 2014 Ford Raptor ... ‘18 2 Door Jeep JL Sport S / 2021 JLUR Apr 20, 2018 · Did you know the 2018 Jeep JL Wrangler 3.6 has two batteries. I will show you where the Stop start battery is and how to disconnect Incase you need to make ... Form Energy, which is developing what it calls ultra-low-cost, long-duration energy storage for the grid, has signed a contract with the Minnesota-based Great River Energy to devel...Baja-D is correct. When ESS is active, the secondary battery is there to keep consistent voltage/power to the electronics during ESS engine stop/start and thusly support the main battery when the ESS system requires the starter to engage. Phil C. 2020 GC Summit 3.6L 4x2. 2011 Kia Optima EX-L ("MC")United Nations Location Code. ES MAD. Open Location Code. 8CGRFCWQ+26. Open­Street­Map ID. way 167025457. Open­Street­Map Feature. aeroway=­aerodrome. Geo­Names ID. 6299345. Wiki­data ID. Q166276. Thanks for contributing to our open data sources. This page is based on OpenStreetMap, GeoNames, Wikidata, Wikimedia Commons and Wikivoyage.I tested my factory battery today in my new Jeep Wrangler Willy 2020. With the battery tester and our batteries are AGM @ 650 CCA. ... Location San Antonio, TX Vehicle(s) 2020 JL Willys 2 door Occupation Wandering Vaquero Aug 2, 2020 ... 07 grand cherokee and it crapped out in 3 years. so i swapped to interstate and had no problems with them ...Exactly. The F42 fuse gives power to the PCR to get the signal from the computer to check the voltage on the aux battery only. By removing the fuse it just sees the main battery. Downside is you have to make sure you disable ESS or you will be starting the Jeep from a stop event with the main battery.Thread starter. #1. Well the known secondary battery issues wreaked havoc on my Jeep during a Rally competition. It malfunctioned and siphoned all the power from my large battery, causing my Jeep to literally die without warning numerous times throughout the rally. I am so disappointed, as it impeded my ability to effectively compete.Jeep Wrangler JL & Gladiator Aux Battery Delete-Odyssey Battery Install. On this video we bypass our 2018 Jeep JL Wrangler's auxiliary battery on the 3.6L a...Remove Cables - How to disconnect the cables the right way. 6. Clean Cables - Clean with baking soda, water and a wire brush. 7. New Battery - Install new battery and prevent corrosion. 8. Secure Battery - Replace the bracket to secure the new battery. 9. Replace Cover - Ensure the cover is put back properly.From looking at the location where my 48volt battery is, the battery pack appears to be as big as a regular 12volt starting battery, if not bigger. But I have not removed the skid plate and measured the actual battery pack yet. Are you thinking of the small battery used for ESS (which underneath the main battery) on 3.6 and non-eTorque 2.0 engines? ….

Mar 24, 2019 · The 3.6L V6 Jeep JL Wrangler features a dual battery system where a main traditional battery is paired with an auxiliary battery for ESS (electronic start stop system). How the dual battery system is wired and operates can be confusing for owners used to a traditional single battery setup. United Nations Location Code. ES MAD. Open Location Code. 8CGRFCWQ+26. Open­Street­Map ID. way 167025457. Open­Street­Map Feature. aeroway=­aerodrome. Geo­Names ID. 6299345. Wiki­data ID. Q166276. Thanks for contributing to our open data sources. This page is based on OpenStreetMap, GeoNames, Wikidata, Wikimedia Commons and Wikivoyage.Dec 13, 2023 · Aux battery issue, need second opinion. ... Location Salt Lake City Vehicle(s) 2018 JL Rubicon, 2014 Ford Raptor ... ‘18 2 Door Jeep JL Sport S / 2021 JLUR The second battery is for the ESS system. ... The ETorque system will have a different 48V battery in a different location. Acts 17:22-34. Reactions: Jhatley7. Rubycon50 Well-Known Member. First Name Royce Joined Dec 21, 2019 Threads 12 Messages 113 Reaction score 131 Location Glendora, California Vehicle(s) 2018 Jeep Rubicon JL Vehicle ...The wiring would be easy, due to the proximity of the batteries. It is always good to do the second battery with an isolator, that way you don't drain both down and get stuck somewhere. I have always used a second battery for every elect assy I add, and when I add a winch, I also change the alternator to a higher output alternator, the draw ...First Name Ken Joined Mar 30, 2018 Threads 47 Messages 586 Reaction score 863 Location NW Montana and Yuma Az Vehicle(s) 2018 jlUR White Rubi, 2018 GMC 3500 Duramax,From NOCO's website: "Most vehicles will immediately start. Some vehicles may require Boost to be connected for up to 30 seconds before starting. If the vehicle does not start right away, wait 20-30 seconds and try again. Do not attempt more than five (5) consecutive jump starts within a fifteen (15) minute period."#1 · Mar 16, 2022. Must be my turn to have the battery issues. 2021 JLUR and it has been flawless (so far) with only 3900 miles. My stop-start has worked as it should until now. …second battery. Thread starter toneloc2; ... 2019 jeep wrangler sahara jl Vehicle Showcase 1. Jul 1, 2022 ... Location K-ville, NC Vehicle(s)Succesfully disconnect the wire, Jeep over torque the screw connects two wire. And Wow, a lot of sparks on the connector btw ground and second battery, something must be running to cause the spark. Interesting. I didn't want batt tender simply don't want another thing in garage, and don't want to drag extension cord over to trip my son or some one. Jeep jl second battery location, Is there an aux battery in the 392 compartment somewhere? Menu. News. Forums. New posts Trending Search forums Search Images. What's new. Unread posts All posts Latest activity New vehicle showcases New showcase comments. ... Location Western WA Vehicle(s) '67 RS-SS Camaro, 2021 JLUR392 Jan 18, 2022 #2, Edit: I probably should have expressed ways to determine if owners have a dual AGM battery JL. It's my understanding that those JLs that don't (e.g. Etorq, 4xe) won't have a Fuse 42 plugged into the #42 slot, and only one factory cable on the main battery's negative terminal., The auxiliary battery powers many accessories while the engine is in a ESS-induced slumber. I also had ESS defeated with a Tazer. Nevertheless, I started having miscellaneous electrical gremlins as the auxiliary battery weakened and neared replacing. Replacing the auxiliary battery eliminated all the gremlins., When a Jeep Wrangler JL/JLU has E-torque, then you only have one Battery. With no E-torque, then you have a main and aux Battery. This also is applicable, to different year JL/JLU's. ... Etorque has a main batter in the normal location in the engine bay + a 48v battery located where it's noted in the above picture. Also the 48v battery is a ..., Suggestion to the OP, replace the main battery, disconnect the aux negative battery cable, pull the F42 fuse and go enjoy your Jeep and don't worry about this happening again. Add the smart auto stop/start module and use ESS when you want or just shut it off and not have to worry about the button it will remember its last setting., The 2nd battery for the ESS. And little Hurly Burly came by in his Curly ... Banned. First Name Ronald Joined Jan 26, 2019 Threads 62 Messages 1,113 Reaction score 691 Location Boston Vehicle(s) JL Wrangler ... 12V battery without issue (I don't know the product) then there should be no issue with you hooking it up to the JL's main battery ..., Auxiliary Battery Charge Needed/Functions. 2017 Grand Cherokee Summit. I recently had four dash lights come on to include Service Cruise Control Disabled, Front Collision Warning (FCW) Disabled, Electronic Stability Control (ESC) Service, and Battery Fluid Low. I took it in to be looked at and the Jeep dealer diagnosed it as the Auxiliary ..., Edit: I probably should have expressed ways to determine if owners have a dual AGM battery JL. It's my understanding that those JLs that don't (e.g. Etorq, 4xe) won't have a Fuse 42 plugged into the #42 slot, and only one factory cable on the main battery's negative terminal., Stock Battery Relocation Kit. for 2018+ Wrangler & Gladiator with Gas Engine. This kit relocates the stock small aux battery from under the fuse box to above the fuse box, allowing for easier access for servicing the battery in the future. All wiring remains 100% stock, with no changes to the ESS (Engine Stop Start) system., 2020 JL 2.0. Main battery died last week, and changed it and the aux (at 3 years anyways). Utilized the "removing PDC" route for aux replacement. Job went fine and cranked right up. Took a drive with no issues. Shut down for the night. Went to crank it this morning and it turned over but would not fire. Checked codes. See attached image., Oh yeah. This kinda thing was happening to the review models back before the JL hit lots. However, while tedious, the battery is relatively easy to replace and a faulty or dying one is certainly indicative of the issues you're having. It could also be a problem with fuses, but regardless, that's what your warranty is for., How to replace the auxiliary battery on your 2018+ Jeep Wrangler JL/JLU or 2020+ Jeep Gladiator JT! This process is fairly easy to do, tools you might need: ..., Wow Don. Your dealer had a problem taking your money to apply a TSB that's been shown to allow 2018 3.6L JLs to crank on the second crank attempt (off the main battery) of the ESS battery is dead? First off, you can tell Jeep Cares on the forum about this, and second, you can test if your 2018 already has this feature., 3 different ways to get to the Auxiliary Battery on the JL Wranglers….taking out the fuse box/power distribution center, removing the fender liner or removin..., The Jeep started normally, but did have a "check engine" light on first start. That CEL went away on the second start and the Jeep seems to behave normally. Huge thanks to Rheinbeck for the live help and to Jediruph for all the work investigating, and more importantly, documenting clearly, the battery system., I wanted to share some information on replacing the 12V batteries on the RHD JL for Australian owners. This isn't a step-by-step guide, as it's essentially the same as the LHD process other than how the auxiliary battery is accessed. Removing factory batteries Disconnect and isolate the..., The Jeep Wrangler 4xe’s 400-volt, 17-kWh, 96-cell lithium-ion battery pack uses nickel manganese cobalt (NMC) graphite chemistry. The pack and controls mount underneath the second-row seat, where it is protected from outside elements., Location Bellingham, WA Vehicle(s) 2023 Jeep Gladiator, 2018 Fiat 124 Spider ... Jeep Wrangler Sport S JL 2-D Build Thread Link Occupation Professional dancer/male stripper Dec 22, 2022 ... The second battery reliably reads 12.9/13.0 volts at shut down and the main battery at shutdown reads 12.7/12.8. I'm using the Jeep's EVIC …, That being said, if one has a good main battery and does the aux battery delete, the occasional ESS actuation should not be a issue. 2022 JT Gladiator Rubicon 3.6L. 2021 JT Gladiator Willys 3.6L (SOLD) 2020 JT Gladiator Rubicon 3.6L (SOLD), How to delete the aux battery in JL and JT, 2019 Jeep Wrangler Unlimited Rubicon Occupation Mechanical Engineer Feb 15, 2020. Thread starter #1 I am installing the S&B air intake CEL fix & was instructed to disconnect the 12V battery & eTorque battery. Where is the eTorque battery located & how do I disconnect it? I saw on the 3.6L they have the ESS battery underneath the Auxillary ..., Mar 28, 2023 · Well, apparently all JL's have battery issues, thank you Jeep. We had problems with our JLU, replaced it with a JLURD. (Right now the JLU is having other JL issues - oil cooler, cam shaft, valves - about 1/2 of an engine swap). Since we got the JLURD, we then have virtually never used ESS - but still that little battery has caused headaches. , Replacing the small battery can be a pain due to location. That said, I was pleasantly surprised that, on the Ecodiesel, there is a convenient trapdoor to access the smaller battery. ... Anyone who thinks it's a 15 minute job to replace both batteries in a JL either hasn't replaced the second ESS battery, or was operating on "beer time" when ..., ESS second battery had failed - no charging at all. ... Forget a 3-4 year old battery. The odds of a new ESS equipped JL not starting after being parked 5-7 weeks is high. Very High. There are cases of them not starting after 3-4 weeks. Some even sooner, like 2-3 weeks. ... Location Il Vehicle(s) Jeep May 7, 2020 #12 Bryce said:, Location Chicago, IL Vehicle(s) '18 Jeep JL Unlimited Sahara Sep 22, 2022 #11 ... the second attempt at cranking should then cause the vehicle to try using solely the main battery to crank. If successful the EVIC should display a "ESS off" light, and your done. ... or an ESS system that won't engage is entirely separate from electrically ..., Jan 8, 2023 · How to replace the auxiliary battery on your 2018+ Jeep Wrangler JL/JLU or 2020+ Jeep Gladiator JT! This process is fairly easy to do, tools you might need: ... , Location San Diego Vehicle(s) 2021 Jeep Wrangler Unlimited Sport Altitude Jan 29, 2024 #3 mrm143 said: New owner here and already posted a few questions. ... I reviewed many articles on this forum about the etorque and found out it comes with a 48V 2nd battery and not the small Aux battery. I took it back to the dealer to complain and they said ..., Location Chicago, IL Vehicle(s) '18 Jeep JL Unlimited Sahara Sep 22, 2022 #11 ... the second attempt at cranking should then cause the vehicle to try using solely the main battery to crank. If successful the EVIC should display a "ESS off" light, and your done. ... or an ESS system that won't engage is entirely separate from electrically ..., Jan 18, 2023 ... How to easily isolate the auxiliary battery in your JL Wrangler or JT Gladiator (Aux battery delete). 24K views · 1 year ago ...more ..., Is an electric car battery different from a typical car battery? Find out how an electric car battery differs from a typical car battery in this article. Advertisement A car can be..., You have all the symptoms. Charging the 12v battery is a great temporary fix. Replace the inferior stock 12v battery with an H8 size unit. Don't buy a cheap one. Buy a lithium jump start to get the rig operating when failure occurs. At very low temperatures the 48v battery will have a low SOC and may not charge the 12v battery adequately., It is always good to have a secondary battery installed in your JL Wrangler just so to prevent your main battery from draining when numerous accessories are ..., Troubleshooting 2021 JLUR Battery Issues. Must be my turn to have the battery issues. 2021 JLUR and it has been flawless (so far) with only 3900 miles. My stop-start has worked as it should until now. Nothing has changed as far as I can tell, but the stop-start has not worked for 2 days in a row. The battery gauge shows 14.2-14.3 all the time.